Question # 1

If a body of mass 'm' was released in a vacuum just above the surface of a planet of mass M and radius R what will be the gravitational acceleration.

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GmM/R

GM/R²

GM/R

GM/2R

The graph between restoring force and time in SHM is a

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Straight line

Parabola

Sine wave

Circle

Frequency of second pendulum is.

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0.5 Hz

1.0 Hz

1.5 Hz

2.0 Hz

Which of the following statements concerning G and g is true.

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g is scalar white g is a vector

g is inversely proportional to the mass of the planet

g is independent of the mass of the planet

both G and g have the same units

Vectors are ofhen spilt into two or more orthogonal components what is true of these components.

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they are perpendicular

They are parallel

They are antiparallel

They have same magnitude

Length of second pendulum is

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98 cm

99 cm

99.2 cm

100 cm

The escape velocity

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Is independent of mas of the body

Increases with the increases of mass of the body

Decreases with the decreases of mass of the body

Depends upon the type of body used

An object falls freely under gravity the vertical equilibrium of the body inside is

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Stable

Unstable

Neutral

Unknown

If the dot product of two non zero vectors vanishes the vectors will be.

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any scalar quantity

Any negative number

Its magnitude but not direction

Its magnitude and direction

When a force of 4 N acts on a body of mass 2 kg for a time of 2 s, the rate of change of momentum is.

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2 kg ms -1

4 kg ms-1

8 kg m s-1

16 kg m s-1

The period of a geostationary satellite is.

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32 hours

72 hours

48 hours

96 hours

Simple harmonic motion may be assumed as a projection of uniform circular motion along a

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Diagonal

Hypotenuse

Radius

Diameter

When a force is applied on a body several effects are possible which of the following effect could not occur.

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The body speeds up

The body changes direction

The pressure on the body increases

The mass of the body decreases

If the resultant of two forces, each of magnitude F have the magnitude F, angle between the forces will be.

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30^o

80^o

90 ^o

120 ^o

The hydrogen filled balloon possesses

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P.E

K.E

Heat energy

Elastic energy

A particle executing simple harmonic oscillations of frequency 100 Hz has an amplitude of 0.1 cm The velocity amplitude of the particleis.

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20 micro cm s-1

10 micro cm s-1

20 cm s-1

19 cm s-1

The product of force and duration of impact is called.

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Density

Momentum

Torque

Impulse

A physical quantity not directly involved in rotating motion is.

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Moment of inertia

Mass

Angular velocity

Torque

A stone is whirled in a vertical circle at the and of a string when the stone is at the highest position, tension in the string is

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Maximum

Zero

Equal to weight of the stone

Less than weight of the stone.

When two vectors have opposite directions we say that they are

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Parallel

Antiparallel

Perpendicular

Out of phase

In an elastic collision

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K.E. is conserved

Both K.E. and momentum are conserved

K.E. is not conserved

Only momentum is conserved

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